Symbol: v4l2_queryctrl
drivers/media/v4l2-core/v4l2-ctrls-api.c
1189
int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
include/uapi/linux/videodev2.h
1999
struct v4l2_queryctrl {